Upholstery welt cord

Abstract

A fire retardant welt or beading cord having an aluminum foil element provided to dissipate the heat but which normally would be distorted when bent, in which cord memory is provided by an inner core formed from an elongated cylindrical, flexible member, preferably a foamed, flexible polymer.

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 
     
       1. In a welting cord comprising compressed crepe sheets of cellulose wadding with at least one continuous sheet of aluminum foil combined therewith and extending the length of said cord for dissipating heat in the event said cord is subjected to heat from a cigarette and the like, said cellulose wadding encompassing said aluminum foil to provide a soft surface to said cord; the outer surface of said cellulose wadding being wrapped with a jacket of threads to maintain the cord-like shape thereof; the improvement comprising: an elongated inner core in said cord, said inner core formed from an elongated cylindrical flexible member having a memory force greater than the shape retaining force of the aluminum foil whereby when the cord is bent, the memory of the composite cord is sufficient to retain the shape of the cord when bent around corners. 
     
     
       2. The core of claim 1 wherein the material of said inner core is a foamed, flexible polymer. 
     
     
       3. The core of claim 1 wherein the material of said inner core consists essentially of cellular foamed polyethylene. 
     
     
       4. The cord of claim 1 in which a non-woven polyester is located between said inner core and said combination of cellulose wadding and aluminum foil. 
     
     
       5. The cord of claim 4 in which the aluminum foil is at least one strip having a width extending a distance at least partially around the circumference of the non-woven polyester portion of the cord, said strip extending lengthwise of the cord, and located between a portion of the cellulose wadding and the non-woven polyester. 
     
     
       6. The cord of claim 4 in which a jacket of threads is wrapped around said non-woven polyester, said strip of aluminum foil extends around a substantial portion of the non-woven polyester, and said cellulose wadding is wrapped around said aluminum foil and held in place by its jacket of threads. 
     
     
       7. The cord of claim 1 in which the aluminum foil is at least one strip having a width extending a distance at least partially around the circumference of said inner core, said strip extending lengthwise of the cord, and located between a portion of the cellulose wadding and the inner core.